in-

Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

Not: inarticulate. Before l, in- is usually assimilated to il-; before r to ir-; and before b, m, and p to im-. See Usage Note at un-1.

In; into; within: inundation. Before l, in- is usually assimilated to il-; before r to ir-; and before b, m, and p to im-.

Variant of en-1.

from Wiktionary, Creative Commons Attribution/Share-Alike License

Prefixed to certain words to give the senses of in, into, towards, within.

in, into

Used with certain words to reverse their meaning

from the GNU version of the Collaborative International Dictionary of English

A prefix from Eng. prep. in, also from Lat. prep. in, meaning in, into, on, among. In words from the Latin, in- regularly becomes il- before l, ir- before r, and im- before a labial. In- is sometimes used with an simple intensive force.

Examples

Ignoring the warning signs, Penn State and its agents gave Jerry Sandusky the golden key to paradise in- free reign to Paterno's sports kingdom where Sandusky could continue to molest young children under the guise of his charitable organization The Second Mile which he started allegedly to help young children.

Understanding the psychology behind that reflex should help us tell stories and bridge the differences in ways that bring sustainability's in- and out-groups a lot closer together, and for the good of all.

Ships set out once a month with reinforcements, repairs, representatives from any corp who needed to address problems with their dedicated servers—ships that plotted a top-secret course radioed to the captain on a special frequency only once the boat had X-rayed and analyzed every single thing, animate or in-, to come aboard.